ADREF

ADREF

ADC Reference Selection Register
  0x234 8  

ADREF

Bit  7 6 5 4 3 2 1 0  
        NREF     PREF[1:0]  
Access        R/W     R/W R/W  
Reset        0     0 0  

Bit 4 – NREF: ADC Negative Voltage Reference Selection

ADC Negative Voltage Reference Selection

ValueDescription
1 VREF- is connected to external VREF-
0 VREF- is connected to AVSS

Bits 1:0 – PREF[1:0]: ADC Positive Voltage Reference Selection

ADC Positive Voltage Reference Selection

ValueDescription
11 VREF+ is connected to internal Fixed Voltage Reference (FVR) module
10 VREF+ is connected to external VREF+
01 Reserved
00 VREF+ is connected to VDD